3.245g 0.11M 0.11M = mol/0.100L = 0.011 mol (249.5896g) = 2.745g 0.090M 0.090M = mol/0.100L = 0.009 mol (249.5896g) = 2.246g 0.070M 0.070M = mol/0.100L = 0.007 mol (249.5896g) = 1.747g Concentration (M) Wavelength Determination (Trial One) Wavelength Determination (Trial Two) 0.13M 50%T 49%T 0.11M 55%T 54%T 0.090M 62%T 59%T 0.070M 68%T 67%T Concentration (M) Absorbance Measurements (Trial One) 2-log(%T) Absorbance Measurements (Trial Two) 2-log(%T) 0.13M 0.30M 0.30M 0.11M 0
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Neutralization Titrations: The Determination of Sodium Carbonate from Unknown Soda Ash Unknown # I. Purpose: The goal of this experiment is to determine the weight % of Na2CO3 through the preparation of NaOH and HCl standards. The molarity of the standards will be found through titration of KHP for NaOH‚ HCl vs the known NaOH‚ and the unknown Soda Ash sample vs the known HCl. II. Equations and Sample Calculations: Titration of HCl with NaOH: Complete Equation: HCl (aq) + NaOH (aq)
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and Architecture Saint Louis University Group No. 12 Members: DEMOT‚ Judy Ann SOMERA‚ Randolf P. TIPAYNO‚ Samantha TORZAR‚ Precious Imee I. Signatures: ____________________ ____________________ ____________________ ____________________ Title: Determination of Molecular Weight of a Volatile Liquid By Vaporization: Dumas Method Background of the Study Problem In this experiment‚ an unknown liquid is in need to be identified and one of the key factors to identify it is to determine its molecular weight
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Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective A: To accustom participants (students) to general procedures that are used to obtain a partition coefficient at the microscale level. We will gain experience in such practices as the transfer of microliter volumes of solutions with a Pasteur filter
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References: 1. Department of the Interior‚ Fish and Wildlife Service: 50 CFR Part 17. (2008). Endangered and Threatened Wildlife and Plants; Determination of Threatened Status for the Polar Bear (Ursus maritimus) Throughout Its Range; Final Rule. Federal Register: Vol. 73‚ No. 95. Washington‚ DC: U.S. Government Printing Office. Retrieved from: http://frwebgate.access.gpo.gov/cgi-bin/getpage
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Quantitative Determination of Sulphate by Gravimetric Analysis Table of Contents: 1. Synopsis 2. Objective 3. Theory 3.1: Summary 3.2: Technique 3.3: Chemicals 3.4: Instruments 4. Procedures 4.1: Precipitation of BaSO₄ 4.2: Washing and Filtration of BaSO₄ Precipitate 4.3: Drying and Weighing of BaSO₄ Precipitate 5. Results and Calculations 6. Discussions 7. Conclusion 8. References 1. Synopsis: This report is written about determining
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Determination of the Composition of Cobalt Oxalate Hydrate Experiment 12 Robbie Kinsey Partner: Debnil Chowdhury Chem. 1312-D TA’s: Russell Dondero & Sylvester Mosley February 9‚ 2000 Purpose The purpose of this lab was to determine the percent cobalt and oxalate by mass‚ and with that information‚ the empirical formula for cobalt oxalate hydrate‚ using the general formula Coa(C2O4)b.cH2O. Procedure The powdered cobalt oxalate
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Individual blame can cover up a much larger‚ societal issue In the excerpt from Poor People’s Movements: Why They Succeed‚ How They Fail‚ authors Fances Fox Piven and Richard A Cloward use the Great Depression of the 1930’s to illustrate how people respond to crisis. In the beginning of the economic depression when workers were being laid off‚ “official denials helped to confuse the unemployed and to make them ashamed of their plight” (Piven and Cloward 290) In reality‚ the issue expanded far beyond
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DATE PERFORMED: JULY 20‚ 2007 SPECTROPHOTOMETRIC DETERMINATION OF EQUILIBRIUM CONSTANT FOR A REACTION ABSTRACT UV-VIS spectrophotometry is one of the most widely-used methods for determining and identifying many inorganic species. During this experiment‚ this spectrophotometry was used to determine the equilibrium constant‚ Keq‚ of the Fe3+(aq)+SCN-(aq)↔ FeSCN2+(aq) reaction. By determining the amount of light absorbed‚ the concentration of the colored FeSCN2+ solution was also quantitatively
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Blake Taylor Nationalism and Self-Determination in Southwest Asia Southwestern Asia is the most western sub region of Asia. It is positioned directly south of Eastern Europe. And the region is encompassed by seven major seas; the Aegean‚ Black‚ Caspian‚ Mediterranean‚ Arabian‚ Red‚ and the Persian Gulf. The north region is disjointed from Europe by the Caucasus Mountains‚ the southwest region is disjointed from Africa by the Isthmus of Suez‚ and then the east region adjoins Central and South Asia
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